汽轮机主汽调门双LVDT控制方法研究  

Research on Double LVDT Control Method for Main Steam Regulator of Steam Turbine

作　　者：丁建博 段进宽 殷洪伟 程龙 周声然 王俊棋 Ding Jianbo;Duan Jinkuan;Yin Hongwei;Cheng Long;Zhou Shengran;Wang Junqi(Huaneng Tianjin IGCC Power Co.,Ltd.,Tianjin 300452;Huaneng Tendering Co.,Ltd.,Beijing 102209)

机构地区：[1]华能(天津)煤气化发电有限公司,天津300452 [2]华能招标有限公司,北京102209

出　　处：《中国仪器仪表》2025年第3期50-54,共5页China Instrumentation

摘　　要：汽轮机电液调节控制系统(DEH)是汽轮机的重要控制设备。DEH系统原采用单独位移传感器LVDT控制模式,但该模式表现出的故障率较高、稳定性差,因此当前DEH系统多升级优化为双LVDT控制模式。双LVDT控制可有效提高系统的可靠性,但存在一些控制干扰问题。双LVDT控制模式有多种不同的控制结构类型,每种控制方式在控制系统、控制逻辑、伺服卡功能方面都有一定差异,这导致存在冗余不可靠、调节互相影响,无法实现真正的双冗余控制作用。本文将根据双LVDT控制模式结构特点和存在的问题,研究分析适用于不同环境的可靠的双LVDT控制方法。The DEH is an important control equipment for steam turbine.The original DEH system used a unit displacement sensor(LVDT)control mode,but this mode showed high failure rates and poor stability.Therefore,most current DEH systems have been upgraded and optimized to dual LVDT control mode.Although dual LVDT control can effectively improve system reliability,there are some control interference issues.There are many different types of control structures for dual LVDT control mode,and each control method has certain differences in terms of control system,control logic,and servo card functions,which can lead to redundant unreliability,mutual adjustment interference,and failure to achieve true dual redundancy control.This article will study and analyze reliable dual LVDT control methods applicable to different environments based on the structural characteristics and existing problems of dual LVDT control mode.

关 键 词：LVDT DEH 主汽调门 汽轮机 伺服阀 

分 类 号：TM6[电气工程—电力系统及自动化]